Gearing.



PATENTED FEB. 5, 1907. W. J.`LLOYD.

GEARING.

APPLICATION FILED JULY lz. 190e,

1HE Nanni: sums co.. wa'smycrau. D. c.

No. 843,471. PATBNTED FEB. 5, 1907. W. J. LLOYD.

lGrEARING. APPLIOATION FILED JULYm. 1906.

3 SHEETS-SHEET 3.

Witnesses y lwmom 1ML Nam-us PErrRs co., wAsmNcfaN, :L l:4

drive from the principal or driving shaft to .of the motor-car, showingthe improved driv- WALTER Jer-1N Litern, or `veiiiiirncanin, ENGLAND.

GEARING.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed July 12,1908. Serial No. 325.923.

To a/ZZ whom, it may con/cern,.-

Be it known that I, VALTER Jol-inv Libri, a subject of the King of GreatBritain, residing at Quadrant Cycle Vorks, Sheepcote street, Birmingham,England, have invented certain new and useful Improvements in i Gearing,of which the following is a speciiication.

The said invention consists of the improvements hereinafter described inthe driving and reversing mechanism of motor roadvehicles and othermotor-propelled bodies such, Jfor example, as motor-boatsthc saidimprovements having for their principal objects to dispense withordinary spur-wheels, pinions, and bevel-wheels commonly eniployed inthe said driving and reversing mechanism; to obtain a gear which ispractically noiseless when working as well as when changes in the gearare being effected and which is free Jfrom backlash, to preventinadvertent or accidental extreme changes of speed-that is, a changefrom the .lowest to the highest speed or the reverse wlnle the vehicleis in motion-and to obtain a direct the secondary or chain-wheel shaftwith all speeds as well as when reversing.

I will describe the sald invention as arranged for the driving of amotor road-vehicle in which four different forward speeds and a singlereverse ofthe same speed as the slowest `forward speed are provided; butl wish it to be understood that more or :fewer than iiour forward speedsmay be used without increasing the numb er of gear-wheels employed Iwill describe the said invention in connection with the accompanyingdrawings, Figure 1 of which illustrates a portion of the frame ing andreversing gear in side elevation. Fig. 2 is a plan of the same. Fig. 3is a cross-section on the dotted line X X, Fig. l. Fig. 4 represents aportion of the arrangement in side elevation with the parts in theirunlocking positions. Fig. 5 is an .endvelevation of certain ofY theparts at the right-hand end of Fig. 1 looking in the direction of thearrow in the said Fig. l.

The same letters oi` reference indicate the same parts in the severalfigures of the drawings.

d is the driving-shaft of the gear, which shaft is in line with and isconnected directly to and disconnected Jfrom thc motor-shaft l (notshown) by means of a clutch, as is usual. l

B b are pin or lantern wheels on a square portion of the shaft a. Thesaid pin or lantern wheels B l) are connected together by means of thedepending arms c c and tube or sleeve d on the guiding-rod e parallelwith and below the driving-shaft a.

By sliding the tube d in one direction along the guiding-rod e by themeans hereinafter described the forward-driving lantern-wheel B can bebrought into gear with one or other of the four concentric circles ofroller-pin teeth on the large disk or wheel j, keyed to the secondaryshaft g, and by sliding thc said tube d in the opposite direction on therod c the reversing .lantern-wheel l) can be brought into gear with theouter circle of roller-pin teeth on the large disk oi' wheel f.

On a preferably square or angular portion of the second ary' shaft g isa sleeve or hollow shaft zf, having upon it a chain-wheel fi andbrake-drum r. 'lhe chain-wheel "i is geared by means of a driving-chainZ (indicated in dotted lines in Figs. l and 2) to thc chainwheel fm, ofthe ordinary balance-gear on the back or driving axle 71y of the motorroad-vehiclc.

The lantern-wheels B f), the teeth of which have the form of conicalrollers, are at such a distance apart that in one position to which theycan be brought by the turning of the hand or operating lever o neitherof the said wheels B gears with the large rollercarrying pin-wheel f ofthe secondary shaft g, the inotor-car in this position of the parts ofthe gear being permitted to iun independently of the driving mechanism,or, as it is commonly called, with a free engine.H ln the positions ofthe parts of the gear represented in the drawings the driving mechanismis arranged for forward driving at its slowest speed, the wheel B forforward driving being in gear with the outer circle of roller-carryingpins of the wheel f. By bringing the pin-wheel B into gear with one orother of the inner circles of roller-carrying pins the speed of thelarge wheel f and its shaft g can be increased to the desired eX- tent.F or the reverse or backward driving of the vehicle the two connectedgear-wheels B l) are moved in the direction of the dotted arrow in Fig.l until the wheel l) is brought into gear with the outer circle ofroller-carrying pins of the wheelf.

On each operation of the mechanism for changing the speed or directionof motion of IOO the car the secondary shaft g is first moved endwise bythe means hereinafter described, so as to take the large wheel f out ofgear with the forward-driving wheel or pinion B or reversing wheel orpinion l).

I provide for giving motion to the tube -or sleeve d and wheels B b,connected thereto, the ordinary hand-lever o, with locking rod or bar p,working over the notched quadrant 7, and in addition thereto afoot-lever s. The tubular shaft or spindle t, to which the handlever ois keyed or fixed and which is partially rotated in one or otherdirection on the turning 4of the hand-lever 0, has near its middle adepending arm 14, the lower end of which is connected through theconnectingrod 15 to the tube d. Also on the said shaft t is a second armu, the outer'e'nd of which is of a quadrant form and carries a seriesyof equidistant or nearly-equidistant rollers or teeth o. y

With one or other (or one of the pairs) of rollers or teeth o a lockingprojection w on the nearly-horizontal arm Qc of the bellcrank lever ynormally engages and renders irnlpossible the turning of the hand-levero. The locking projectionw is partially withdrawn, as is represented inFig. 4, so as to permit the movement of the operating-lever 0 bypressure of the foot on the foot-lever s, the said lever s being,forcedv into the dotted position indicated in Fig. 1 for effecting theendwise movement of the secondary shaft g, hereinbefore referred to. Theangular motion of the foot-lever s effects, through the connecting rod zand crank or arm 1, the partial rotation of the cross-shaft 2 andturning of the crank or Aarm 3, to the outer end of which is rconnectedthe spring-pressed lifting-rod 4 with toggle or link arrangement 5 attop. The f pair of links of the toggle arrangement 5 in the normalpositions of the parts-occupy the position represented in full lines inFig. 3, but on the raising of the lifting-rod 4 the links take theposition indicated in dotted lines in the said Fig. 3, and therebyeffect the endwise motion of the secondary shaft g.

Jointed to the crank-or arm 1 is a rod 6, supported at or about itsmiddle by the rearwardly-inclined link depending from the frame of thecar. rl`he front part of 'the rod 6 is of elastic steel and has near itsextreme end a hook 8, (see Figs. 1 and 4,) with which engages the hookedend 9 ofthe arm y ofthe bell-crank lever x y. l/Vhenthe arm or crank 1is turned by the pressure of the foot on the foot-lever s, the rod 6 isforced forward, and thereby effects the turning-of the bell-crank leverx y into the position represented in Fig. 4, which results in thefreeing or unlocking of the operating hand-lever o. Inthis position ofthe parts the depending link 7 is practically vertical and exerts adownward force, tending to disengage the hooks 8 9. Consequently on themovement in one or other direction of the operating hand-lever therollertooth n of the arm u in passing over the projectionweffects amovement of the bell-crank lever x y independent of the rod 6, the saidbell-crank lever ly taking the position indicated in dotted lines inFig. 4 and the springarm of the rod 6 dropping under the pressure of thedepending link 7 until the hook 8 is clear of the hook 9. On theroller-tooth v passing the projection w the spring 10 causes theengagement lof the projection w with the space between lthe next pairofrol'lerift'eeth v.

In the way-described it will be understood that when the vehicle is inmotion the speed can only be changed gradually, or by step-bys'tepincrements ordecrements, vand `the accidents which frequently happenfrom time 'to time by a sudden and too excessivechange of speed areaverted. To permit the gear 'to be changed when the'car 'is not inmotion from any speed to which it may 'have been yset when the vehicle'came 'to rest to 'a'ny -o't-her speed or to free engine, I provide ahandlever 11, connecting-rod 12, and secondary lever 13, the latterbeing lso arranged that'one of its arms will effect 'the rturning of the`Ibellcrank lever x y when the lhandlever 11 Eis operated into itsnon-locking position.

The hand-lever 11 Vand `parts in'connecftion therewith are for thefollowing purpose: Assuming that :the motor-'car has been brought to'rest 'with Ithe driving-pinion B in gear with one of the innermost'circles of roller-teeth on Athe disk f and 'it is desired to start thevehicle at the slowestspeed'orto reverse, it is only 'necessary toactua'fte the hand-lever 11 with one hand and to put tthe foot oftheoperator on 'the lever S, whenthe hand-lever o ycan be moved tofan'ydesired extent, the pinion B being'carried through several gearsat-one operation.

Having now described'my invention, what I yclaim as new, and desire tosecure by Let'- vters Patent, is-

1. A mechanism ofthe class described, consisting of a driving-shaft,pinions slidable in unison on said shaftand rotative withthe latter, asecondary slidable shaft, ad-iskc'arried by said shaft and fh'aving'aseries fof-concentrically-arranged rollers thereon, means associatedwith the slidable shaft `and driven thereby to impart motion to 'avehicle, means for shifting the pinio-ns to Ebring 'one o'f -ithe samein position for vengagement with 'the disk, and means for impartingsliding motion to the secondary shaft.

2. A 'mechanism of the-class described, consisting of a driving-shaft,gpinionsslida'ble in unison'on'said shaftand rotative with the rlatter,a secondary slidable shaft, fa diskcarried by said shaft and having aseries offconcentrically-a-rrangedfjro'llers thereon, means associated'with the `slidable shaft and driven thereby to impart lmotion toavehicle, means for shifting the pinions to bring ione lof the TOO ISO

saine in position 'for engagement with the disk, means for impartingsliding motion to the secondary shaft, and means ilor locking the means'for shifting the pinions against movement of the latter with respect tothe disk.

3. In a mechanism of the class described,

a driving-shaft, a pair of lantern-Wheels retatable therewith andslidable longitudinally on said shaft, a shiftable secondary shaft, adisk having a series oi concentrically-arranged rollers thereon, saidsecondary shalt being at right angles to the driving-shaft, a drivenWheel associated with and actuated by said driving-shait for impartingmotion to a vehicle, a foot-lever having connection with the secondaryshaft, means having connection with the lantern-Wheels to move the samein unison, and means for locking and releasing the latter means.

4. In combination With a vehicle, a driving-shaft, a pair oflantern-wheels slidable longitudinally on. the shalt and rotatable withthe same, each of said lantern-Wheels having connection and lbeingadapted to move in unison, a secondary shaft having a disk carriedthereby, a series o'f rollers arranged in circles concentrically on saiddisk, a foot-lever associated with said secondary shaft for moving thesame toward and from the driving-shaft, a lever having a segmentprovided with spaced rollers and having connection with thelantern-wheels, and a handoperable lever having means for engagement inthe spaces between the Wheels carried by the segment to lock theVfirst-mentioned lever against movement.

In testimony whereo'l I have hereunto set my hand in presence oi twosubscribing Witnesses.

WALTER JOHN LLOYD. Witnesses:

RICHARD SKERRETT, WILLIAM JAMES BOWKER.

